{
  "manageEntity": {
    "action": "Save",
    "entityId": "1119010",
    "entityType": "Track",
    "nonce": "0x13af0971ffccd0e7d07cc09dbb55873f8b7c5e6d155ebeaafddd333817fd08a2",
    "signature": "0xfa3d8bd210366d27c924eb2cca0600e7f3d9f2136169f8800891c0dab46668c90163c564598448c86eddd86a1f4e872c0b9d33714b3269882870611192b494c11b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}